Telephone cut-out.



No. 881,628, Y I PATENTED MAR.10, 190's.

' E. w. SMITH.

TELEPHONE GUT-OUT.

APPLICATION FILED JULY 12. 1907.

'2 SHRINK-SHEET 1.

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A TTOHNE Y S PATENTED MAR. 10, 1908.

E. w. SMITH. v TELEPHONE OUT-OUT.

APPLICATION FILED JULYIZ, 1907.

2 SHEETS-SHEET 2.

. mgvm oe 1 BY g I $6 W ATTORNEYS WITNESSES 1W EDWIN W. SMITH, OF NEW YORK, N. Y.

ELEPHONE GUT-OUT.

To all whom 'it may concern:

- Be it known that I, Eiiwix W; SMITH, a

subject'of the King of England, and a resident ofNew York, county'and State of New York, have invented certain new and useful Iin rover nents in Telephone Cut-Outs, of which the following is a full, clear, and exact description. r

This invention relates more particularly to a telephone cut-out for party lines.

'The primary object ofthe invention is to provide simple and efficientmeans whereby.

two or more party lines may be connected with the same main line in such a way that when the-telephone of one party line is in use the other line or lines wil be entirely cut out, so that it will be impossible for-a person.

to remove the reeeiverof the usual telephone of an of the other party lines or wires and there y hear the conversation being carried on between those connected together from .the central oflice as is the case with the present system in use. H

Afurtherobject of the invention is to pro vide simple and eflicient means \\'hereb the device is adapted for either a two, four, or other number of party lines on the same main circuit.

With these and other objects in view, the

invention will be hereinafter more pai'tic-' ularly described with reference to the accompanying drawings, which form a part of this specification, and will then be pointed out in the claims at the end of the description.

In the drawings, Figure l is a plan view of one form of device embodying my invention. Fig. 2 is a side elevation. Fig. I; is-a diagrammatic view showing how the part lines are connected with the main line. 7 Fig. 4 is a plan view, partly diagrammatic, showing how four party lines may be connected to the main line; and Fig. 5 is a side elevation, partly broken away, of the form ol cut-out shown in Fig. 4.

.The device 10 may be located .at any co'nvenicnt point andv has a base or support. H to which is held the main line binding posts 12 and 13, the binding posts 14 and 15 of the. party telephone circuit It', and the bimling post's l7 and 18 of the party line telephone circuit 1!). A pair of magnets 20 and .21, one. for caclrparty circuit is suitably supported on the basc l l; The coresot these magnets are, connected to the angular iron plates 2'3 of each magnet, and between the magnets is an armature 23. This armature 2; is-pi\-'ot Specification of Letters Patent. Application filed July 12, 1907. Serial No. 383,464.

Patented March 10,-1908.

ed at 2-1 between the upright lugs or'parts 25 of the plate 26, and is held. to swing toward either magnet according .to which one is energized b the electric current passing therethrough. The armature 23 has .an arm 27 projecting outward therefrom, and on the end of said arm are arrangedeontact points which are adapted to engage contact points carriedby the spring devices or members 28 and 29 on opposite sides thereof. These.

spring contacts or devices normally hold the armature .lllltlwtty between the magnets 20 and 21, and are suitably held to the base 11 by means of screws or iii any other desiredway. By this means the armature. -23 wllllntlie magnet 20 is energized will be forced toward- -'tlie latter magnet, and will break the con-.1

neetion between the yielding contact. 29, and when the magnet 21 is eiiergizeitthe armature 23 will break the contact between said armature and the spring-member 28.,

To include the several parts properly,

within the electric circuit, the party-line. 19 has its post 17 connected to the yielding-contact. 2!) and the binding post Wis connected to one end ol" the coil of the. inagiietll, while. the binding post 14 of tlie party line 16 is coniiected to the 'ieldhigcontactBS, and-the binding post 15 toone end of thecoilof the magnet .20. The other endolthe coils of the magnets are. connected by the wires 30 and 31, Fig. l,

with the bindingpost l3ol" the mainline,wliile the armature is connected through the plate itiaiid'tlie wire 3-32 to the binding post l2,also ol' the main line. ThebindingpostslZand13 :ll((t)llll((.l(tl through the. wii'es35 and 36 with the central ullicc, from which connection may be made with the telephone of either party line 16 or it) in the usual way. Each party line to and I!) has its electric circuit including the wires 2%? and 38, and the tele phone 3!), which isincluded in said circuit in the usual manner.

Tllt'. telephones are. used in exactly the party removes the receiver from the usual hook, the circuit will be completed through the wire. 0!, binding postl5, magnet 20,

wire 50, binding post 1.5, main line w1re 3o,

main line wire 3-36. armature 23. yielding contact 2h, binding post H, and wire 38. This operation will draw .the armature 23 toward 100 same manner as under the present system, .7

.20) nets43, 44, 45 and 4c.-

its coil connected at one end to the main line the magnet forcing the contact 28. along therewith and away from the contact 29, so that the circuit of the party line 19.-'is broken and will remain so even though the receiver 5 be removed from the usual hookof thesaid party line, thereby preventing theparty of me 19 from hearing the conversatioirbetween the party of line 16, and the one con.-

nected through the central oflice. The same lo operation takes lace when the circuit .is completed throng the magnet 21, in which L casethe armature breaks the circuit through i more party lines. The base 41 has a plate 42' on which are mounted a lurality of-magach magnet has ';.wii-e 47, and the --other main line wire" -48 J from the central 'o'fficeis connected to an ="arinature-49 interposed between the several m nets. This armature 49 is pivotallyhel to the plate 42 by a universal Bi 111L50 and around the armature is a spring 51 which normally tends to hold the armaturecen-Q trally between the several magnets, and in,

such a way that the armature-niay inove toward either magnet when the latter is'eiiergizedx The upper end of tlie-arinature49 is-provided with' aplurality of con'tacts-52:

one for each magnet, which may form a partof the armature, and these contactsarearranged in. a substantially star-shaped device 53 of insulation.- The contacts 52 are eachiiorinally engaged by a spring contact 54 carried by each magnet, and said contact is adapted to yield when the armature is drawn towardthe magnet through which the circuit has been closed. Such movement of the armature toward any one of the magnets will cut out all connect-ion with the other party lines, and the spring contacts 54 carried by the other magnets will beentirely disengaged from the contacts 52 of the arina ture. Each magnet is connect-ed witlrits respective party line, and the party'line 55 is ill circuit with the magnet 43, the party line 56 with the mag-net 44, the party'line 57 with the magnet 45, and the party line 58 with the magnet 40. Each party line has one wire -59 connected to the c il of the magnet, and a wire 60 which connects with the contact '54 carried by its magnet. A telephone represented by m, of the usual construction' is arranged in each party line, and

it will be seen, if central has already con 60 nected one of theparties, as party line 55 for example, with a tele hone at a distant point in the usual way an the receiver is removed b the arty called, thecircuit willbe coineted t irough thejwire 59, magnet 43,in ain inc wire 47,.main line wire 48,.- through armature 49, contact 54 carried by the mag net 43, wire 60 to the telephone 61. This will energize the magnet 43, and will draw the armature toward saidzinagnet, so that the ,partyelines 56, 57 and 58 will be'entirely .cut out, thereby preventing the conversation being heard through such-party lines should the receiver be removed from the hook.

[simple and efficient means are provided wherebya plurality of party lines may be employed in connection with the same main line, and that immediately one party line is in use the'other party lines-are cut out, so that the c0nversati0n= .held' over; the-party line in use cannot be heard by others on the same line.

claim as new and desire to secure by Letters llw ia i' 1. In a telephone system, the combination normally .in circuitwith'l-the mainline and the :party lines, and nieai'iswhereby the armakture ma? anyor' 1;

toath'e main. line andetu aptedgto-iuove the armature .to eutiout the partylinenotin use. 3. In a telephone system, thecombination rVVlth ,a base, lot-(four niagnetssupported on magnet, a main'rl-in'e connected; to the magnets, an armature.interposed-between the magnets and included in theinain line circuit and adapted to be drawn toward either one of the magnets, and yielding contacts in circuit with the armature and includedin the partyline circuit.

' 4.. In a telephone system, the combination with fourinagnets, of a party line connected with cach nagnct, a main line connected to tween the magnets and included in theme-in line circuit and adapted to be drawn toward tacts one 1' or each party line normally engaging and 1l 1 C-1I(-l1ll with the armature and included in the party line circuit.

I with. abuse, of a plurality ot magnets supwitheacli magnet, a main line connected to ,the i nagnets, an armature interposed beline circuit and adapted to be drawn toward e ther one of the magnets, and a spring forming ac'ontac't for each party line nor- Having thus described my invention, I.

- with-a; luralityzot lines aiida main* line,'of a "plurali y-ofmagnets one for eachparty line w connected with the main line, an arinature.

be niadeltou reak the circuit with- ;ofzmagne'ts-oneforeac arty- :line, connected,

the base, a partyi-lineconnected.witheachone for each ma- 'net normally eiigagin andtlie nu gnets, an armature interposed be- 5. In a telephone system, the combinatioii' ported ii' the base, a party line connected tween the magnets and included in the main From the foregoing it be seen that =1 2::In a,t ele hone,systeingthe combination I either one of the magnets, and yieldlngl'dlllf mallyengaging and in circuit with the arma- I end so as to sup ort the same on the base to ture and included in the party line circuit,-

I otally held between the magnets and adapted to be drawn toward any magnet when energized, and a plurality oi contacts one on each side of the armature normally engaging the latter and adapted to become disengaged when the armature is moved away by the energized magnet.

7. in a cut-out 'l'or telephones, the combination with a plurality of magnets, of an armature interposed between the magi'iets, a main line circuit, a plurality ol' party line circuits, yielding contacts one for each party line norlnally engaging the armature and in circuit with the party lines, and means whereb the armature may be disengaged from a l but onecontact.

8. In a cut-out for telephones, the con'ibination with tour Jnagnets, of an armature ini move toward eltier of the magnets, a spring 6. In a cut-out for telephones, the combi- Y nation with a support, of a plurality ol magnets held to the support, an armature plvsurrounding the armature and tending normally tohold said armature centrally between the magnets, contacts carried b the armature, and yielding contacts norma ly in 1 engagement with the contacts of the arma-' j ture. i

t 10. In a cut-out for telephones, the combination with four magnets, of an armature interposed between the magnets, a universal joint connected to the armature at its lower end so asto support the same to move toward either of the magnets, a spring surrounding the armature and. tending normally to hold said armature centrally between the magnets, contacts carried by the armature, and yielding contacts normally in engagement withthe contacts of the armature.

H. In a cut-out for telephones, the combination with a base, of a plurality of magnets supported on said base, an armature inter posed hetweenthe magnets, a spring tending normally to hold said armature centrally between the magnets, eontactscarried b the armature, and yielding contacts norma ly in engagement with the contacts of the armature.

This specification signed and witnessed this 5th day of July A. I). 1907.

EDWIN W. SMITH.

Witnesses:

MARUEL Meter, 1,. H. LUNDEN. 

